"Error: invalid event" when listening with WebSocketProvider

[bbarton]

Hi @ricmoo ,

I'm having an issue using the new WebSocketProvider to listen to events.

The following code fires when an event is detected, but my contract.on callback returns an error. I've received the same error trying this on multiple contracts.

var wsProvider = new ethers.providers.WebSocketProvider("wss://rinkeby.infura.io/ws/v3/my_id_here");
let contract = new ethers.Contract(rinkebyAddress, CONTRACT_ABI, wsProvider);
let filter = "Minted";

contract.on(filter, (from, to, value, event) => {
  console.log("from: ", from);
});

The error I receive:

Error: invalid event - filter:0xff2e8205a69f2f4403a66de436894c2eaed1b3d6:0x30385c845b448a36257a6a1716e6ad2e1bc2cbe333cde1e69fe849ad6511adfe
    at getEventTag (/Users/bb/Desktop/aa/node_modules/@ethersproject/providers/lib/base-provider.js:125:11)
    at WebSocketProvider.BaseProvider.listenerCount (/Users/bb/Desktop/aa/node_modules/@ethersproject/providers/lib/base-provider.js:1270:24)
    at WebSocketProvider._stopEvent (/Users/bb/Desktop/aa/node_modules/@ethersproject/providers/lib/websocket-provider.js:274:23)
    at /Users/bb/Desktop/aa/node_modules/@ethersproject/providers/lib/base-provider.js:1303:50
    at Array.forEach (<anonymous>)
    at WebSocketProvider.BaseProvider.off (/Users/bb/Desktop/aa/node_modules/@ethersproject/providers/lib/base-provider.js:1303:17)
    at Contract._checkRunningEvents (/Users/bb/Desktop/aa/node_modules/@ethersproject/contracts/lib/index.js:561:27)
    at Contract.emit (/Users/bb/Desktop/aa/node_modules/@ethersproject/contracts/lib/index.js:647:14)
    at WebSocketProvider.wrappedEmit (/Users/bb/Desktop/aa/node_modules/@ethersproject/contracts/lib/index.js:601:28)
    at Timeout._onTimeout (/Users/bb/Desktop/aa/node_modules/@ethersproject/providers/lib/base-provider.js:1254:32)
    at listOnTimeout (internal/timers.js:531:17)
    at processTimers (internal/timers.js:475:7)

Any guidance appreciated!

(I am on 5.0.0-beta.180)

[ricmoo]

I've been able to reproduce this and am tracking down the root cause...

[ricmoo]

I found the problem and it helped expose another bug.

I've fixed it locally and am running the test suite. Once I commit and the CI finishes I'll publish and update this issue. It should be up in about an hour.

Sorry for the inconvenience.

[ricmoo]

Published to 5.0.0-beta.181. Try it out and let me know if you have any issues. :)

[bbarton]

Thank you! It's now working for my contract events. Grateful for your fast response and your overall work on this project!